# Copyright (C) 2014-2018 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
use strict;
use warnings;
use Test::More;
use Email::MIME;
use PublicInbox::Feed;
use PublicInbox::Git;
use PublicInbox::Import;
use PublicInbox::Config;
use PublicInbox::Inbox;
use File::Temp qw/tempdir/;
my $have_xml_feed = eval { require XML::Feed; 1 };
require './t/common.perl';

sub string_feed {
	stream_to_string(PublicInbox::Feed::generate($_[0]));
}

# ensure we are compatible with existing ssoma installations which
# do not use fast-import.  We can probably remove this in 2018
my %SSOMA;
sub rand_use ($) {
	return 0 if $ENV{FAST};
	eval { require IPC::Run };
	return 0 if $@;
	my $cmd = $_[0];
	my $x = $SSOMA{$cmd};
	unless ($x) {
		$x = -1;
		foreach my $p (split(':', $ENV{PATH})) {
			-x "$p/$cmd" or next;
			$x = 1;
			last;
		}
		$SSOMA{$cmd} = $x;
	}
	return if $x < 0;
	($x > 0 && (int(rand(10)) % 2) == 1);
}

my $tmpdir = tempdir('pi-feed-XXXXXX', TMPDIR => 1, CLEANUP => 1);
my $git_dir = "$tmpdir/gittest";
my $ibx = PublicInbox::Inbox->new({
	address => 'test@example',
	name => 'testbox',
	mainrepo => $git_dir,
	url => 'http://example.com/test',
	feedmax => 3,
});
my $git = $ibx->git;
my $im = PublicInbox::Import->new($git, $ibx->{name}, 'test@example');

{
	is(0, system(qw(git init -q --bare), $git_dir), "git init");
	local $ENV{GIT_DIR} = $git_dir;

	foreach my $i (1..6) {
		my $mime = Email::MIME->new(<<EOF);
From: ME <me\@example.com>
To: U <u\@example.com>
Message-Id: <$i\@example.com>
Subject: zzz #$i
Date: Thu, 01 Jan 1970 00:00:00 +0000

> This is a long multi line quote so it should not be allowed to
> show up in its entirty in the Atom feed.  drop me
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much
> I quote to much

msg $i

> inline me here
> this is a short quote

keep me
EOF
		if (rand_use('ssoma-mda')) {
			$im->done;
			my $str = $mime->as_string;
			IPC::Run::run(['ssoma-mda', $git_dir], \$str) or
				die "mda failed: $?\n";
		} else {
			like($im->add($mime), qr/\A:\d+/, 'added');
		}
	}
	$im->done;
}

# spam check
{
	# check initial feed
	{
		my $feed = string_feed({ -inbox => $ibx });
		SKIP: {
			skip 'XML::Feed missing', 2 unless $have_xml_feed;
			my $p = XML::Feed->parse(\$feed);
			is($p->format, "Atom", "parsed atom feed");
			is(scalar $p->entries, 3, "parsed three entries");
			is($p->id, 'mailto:test@example',
				"id is set to default");
		}

		like($feed, qr/drop me/, "long quoted text kept");
		like($feed, qr/inline me here/, "short quoted text kept");
		like($feed, qr/keep me/, "unquoted text saved");
	}

	# add a new spam message
	my $spam;
	{
		$spam = Email::MIME->new(<<EOF);
From: SPAMMER <spammer\@example.com>
To: U <u\@example.com>
Message-Id: <this-is-spam\@example.com>
Subject: SPAM!!!!!!!!
Date: Thu, 01 Jan 1970 00:00:00 +0000

EOF
		if (rand_use('ssoma-mda')) {
			my $str = $spam->as_string;
			IPC::Run::run(['ssoma-mda', $git_dir], \$str) or
				die "mda failed: $?\n";
		} else {
			$im->add($spam);
			$im->done;
		}
	}

	# check spam shows up
	{
		my $spammy_feed = string_feed({ -inbox => $ibx });
		SKIP: {
			skip 'XML::Feed missing', 2 unless $have_xml_feed;
			my $p = XML::Feed->parse(\$spammy_feed);
			is($p->format, "Atom", "parsed atom feed");
			is(scalar $p->entries, 3, "parsed three entries");
		}
		like($spammy_feed, qr/SPAM/s, "spam showed up :<");
	}

	# nuke spam
	if (rand_use('ssoma-rm')) {
		my $spam_str = $spam->as_string;
		IPC::Run::run(["ssoma-rm", $git_dir], \$spam_str) or
				die "ssoma-rm failed: $?\n";
	} else {
		$im->remove($spam);
		$im->done;
	}

	# spam no longer shows up
	{
		my $feed = string_feed({ -inbox => $ibx });
		SKIP: {
			skip 'XML::Feed missing', 2 unless $have_xml_feed;
			my $p = XML::Feed->parse(\$feed);
			is($p->format, "Atom", "parsed atom feed");
			is(scalar $p->entries, 3, "parsed three entries");
		}
		unlike($feed, qr/SPAM/, "spam gone :>");
	}
}

done_testing();